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Finding the Fourth Proportional to 84,847.80, 127,098.90 and 43,318.20

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Solution

The fourth proportional to 84,847.80, 127,098.90 and 43,318.20 is: 64,889.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,847.80 : 127,098.90 = 43,318.20 : x
  2. Step 2: Convert to fraction form
    84,847.80/127,098.90 = 43,318.20/x
  3. Step 3: Cross multiply
    84,847.80x = 127,098.90 × 43,318.20
  4. Step 4: Simplify right side
    84,847.80x = 5,505,695,569.98
  5. Step 5: Solve for x
    x = 5,505,695,569.98/84,847.80
  6. Step 6: Final answer
    x = 64,889.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.